soffice.bin crashed with SIGSEGV in pthread_mutex_lock()

Binary package hint: libreoffice

happend when closing libreoffice (could this be related to me having lo-menubar installed?)

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libreoffice-core 1:3.3.2-1ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
CrashCounter: 1
Date: Fri Apr 15 11:21:51 2011
ExecutablePath: /usr/lib/libreoffice/program/soffice.bin
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110410)
ProcCmdline: /usr/lib/libreoffice/program/soffice.bin -splash-pipe=5
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xcc733d <pthread_mutex_lock+29>: mov 0xc(%esi),%edi
 PC (0x00cc733d) ok
 source "0xc(%esi)" (0x0000000d) not located in a known VMA region (needed readable region)!
 destination "%edi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: libreoffice
StacktraceTop:
 pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
 pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
 osl_acquireMutex () from /usr/lib/libreoffice/program/../basis-link/ure-link/lib/libuno_sal.so.3
 ?? () from /usr/lib/libreoffice/basis3.3/program/libvclplug_gtkli.so
 ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: soffice.bin crashed with SIGSEGV in pthread_mutex_lock()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare